A large number of sediments deposited in the riverbed of the Yellow River, which affected the long-term stability of water level of the Yellow River. In order to relieve the influence of sediment in the Yellow River, this study aims to use the Yellow River sediment to make artificial stone by the method of alkali activation. The chemical composition and physical properties of the Yellow River sediment as well as the stone were analyzed by X-ray diffraction (XRD), thermo-gravimetric analysis (TG/DTG) and scanning electron microscopy (SEM). The results showed that the compressive strength of the specimen had a significant improvement due to alkali-activation effect. At early stage, the compressive strength of specimen was unstable. In late period, the compressive strength of the specimen increased linearly. Moreover, there was an increase in the compressive strength with the increase in Ca(OH)₂ dosage at 28 and 90 days. When the dosage of Ca(OH)₂ was 12.5%, the strength of specimen reached to the maximum value of 6.9 MPa at 90 days. In addition, the results indicated that the reaction products were mainly the amorphous gel and CaCO₃, and they improved the properties of specimen.

黄河河床大量沉积物，影响了黄河水位的长期稳定。为了减轻黄河沉积物的影响，本研究旨在利用黄河沉积物通过碱活化的方法制备人造石。通过X射线衍射（XRD），热重分析（TG / DTG）和扫描电子显微镜（SEM）分析了黄河沉积物和石材的化学成分和物理性质。结果表明，由于碱活化作用，样品的抗压强度有了显着提高。早期，试样的抗压强度不稳定。在后期，样品的抗压强度线性增加。而且，在28天和90天服用₂剂。当Ca（OH）₂的用量为12.5％时，试样的强度在90天时达到6.9 MPa的最大值。此外，结果表明，反应产物主要为无定形凝胶和CaCO ₃，它们改善了样品的性能。